“…In humans, the mechanisms leading to the formation of a dacryolith remain unknown, although dacryoliths have been related to infectious dacryocystitis, 1 intraluminal foreign body, 1 eyelash nidus, 11,12 and stasis of secretions. 4,[12][13][14][15] In this case, differential considerations for the unattached, calcific mass eroding through the lateral nasal wall and involving the nasolacrimal apparatus included internal, excessive growth of dacryolithiasis 3 ; external, metaplasia of inflammatory secretions secondary to sinusitis, 16 rhinitis, 16 or periapical tooth root abcessation 17 ; or neoplasia. 18 Foreign body 11,12,19 or previous surgery 20 resulting in calcifying, chronic inflammatory accumulations were considered unlikely.…”